Card for long stapled fibrous material, especially cellulose wool



Nov. 25, 1941. J. F. JANNINK 2,263,970

CARD FOR LONG STAPLED FIBROUS MATERIAL, ESPECIALLY CELLULOSE WOOL FiledMay 10, 1949 Patented Nov. 25, 1941 7 CARD FOR LONG- STAPLE!) FIBROUSMATE- RIAL, ESPECIALLY CELLULOSE WOOL Jan Frederik Jannink, EpeinWestphalia.

Germany Application May 10, 1940, Serial No. 334,429

Germany February 24, 1939 Claims. (c1. 19-105 This invention relates toa card for the treatment of slivers which are formed. of long, smoothfibres, especially for the treatment of fibres of. cellulose wool andsimilar artificial or natural fibrous materials.

For the c'arding'of cellulose wool, cards with a feeding arrangement,have been used up to the present which ar similar to those adopted forcarding cotton, except. that the feeding arrangement has been slightlyfurther removed from the spiked roller. It has beenfound that in cards.

carding drum, such arrangements are not verypractical for the treatmentof long stapled fibrous material, especially if cellulose wool orsimilar fibrous material has to be treated. The feed roller must worknecessarily with a certain pressure in order that it can grip the wooland move it'along. If longer fibres are to be treated, i. e., fibres ofa length of about 50, 60, or '70 mm. or more, the fibres are fed intothe drum which receives same from the feed roller while the rear ends ofthe fibres are still subjected to the pressing action of thefeed'roller. The result is that the fibres are bent and broken, and thusthe sliver supplied by the card contains only a small portion of fibresof original length. A considerable waste results further from thecutting on of the fibre points.

The present invention has for its object to avoid bending and breakingof the fibres during their transition from the feed roller to thecardguide the fibrous material passes. This guide can be slightly:tapered in. the direction of movement of the fibrous material. Thepassing means may, however, also consist of a driven cylinder or pair ofcylinders free from teeth and cards and cooperating: with the feed,table.

Another object of the invention is to simplify the carding device ,withcards for long stapled fibrous material. As the fibres are supplied tothe carding. device in greatlength, they can be smoothed much easier. Ina card according to the invention for long stapled cellulose wool it ismerely necessary to provide a carding cylinder disposed beyond thepassing means and then a dofiing cylinder of approximately the samediameter as the carding cylinder.

Several embodiments of the card according to my invention areillustrated by way of example in the accompanying drawing; in' which-Fig. 1 shows diagrammatically one form of card for thetreatme'nt of longstapled cellulose ing cylinder or the like disposed beyond this roller.In order to attain this end, means are provided for passing the woolfrom the feed roller to the carding cylinder, said means having no teethor cards according to my invention, same being particularly adapted forcarding long stapled fibrous material, especially cellulose wool, saidmeans being disposed between the feed roller or the pair of feed rollersand the first drum of the carding device, and said means exerting a lesspressure upon the fibres than the feed roller. Such means effectivelyguides the fibres at the end of the feed table and prevents scatteringof the fibres without undue clamping action thereon. The fibres can thusbe pulled from under said means by the following cylinder in saidarrangement,.without tearing the fibres.

The passing means may consist in the simplest form of a slotted guidedisposed between the feed roller and the first cylinder,.through whichwool,

Fig. 2 shows an elevation partly in section of the feed arrangementutilizing a pair of rollers,

Fig. 3 shows an elevation partly in section of the passing means in theform ofa slotted guide. 7

The card shown in Fig. 1 is equipped with a feed roller l which receivesfrom the lap roller 2 a bat consisting of long stapled cellulose wool.The bat is subjected by the feed roller I to a certain pressing actionnecessary to effect movement of the wool. Beyond the feed roller I isdisposed the passing means which is at least as long as the fibrescontained in the fleece and, if desired, even longer. This meanscomprises a portion of the surface of the feed cable 3 and a pull roller4, the latter being driven so that its circumferential speed is the.same as that of the feed roller 1. The .pull roller 4 may be smooth,fluted or roughened on the circumference and is mounted so that itexerts only a slight pressure upon the wool. Beyond the pull roller 4,instead of the usual licker-in and with omission of the usually providedmain cylinder, is disposed a stretching drum 5 with dofier filleting andof approximately the same diameter" as the dofler commonly used incotton cards. Beyond this sitely directed to those of the stretchingdrum 5.

The drum 5 and roller 6 rotate in the direction of the arrows. They takeup the material and deliver it with uniformly directed fibres by meansof the doffer comb 1 into a sliver tunnel of usual construction or intoany other drawing arrangement.

The pull arrangement 4 following the feed roller I can be provided alsoin any other construction of card. The apparatus may, for instance,

be equipped as usual, with or without a licker-in, with a maincylinderof greater diameter which is constructed as a fiat card or as a rolledcard. In the form of construction shown in Fig. 2 a pair of feed rollers8 are used, instead of one single feed roller and also a pair of pullrollers 9 disposed beyond these feed rollers, the pair of pull rollersexerting only very little pressure upon the wool lo.

In the form of construction" shown in' Fig. 3

as the wool is fed. For the rollers 9 shown in Fig. 2 circulatingendless bands may be substituted.

I claim:

1. A card for long stapled fibrous material, especially cellulose wool.comprising a carding device consisting of rotary drums for smoothing thefibres; a feeding device for forwarding the fibres to said cardingdevice, said feeding device comprising rotary means exerting a clampingpressure upon the fibrousmaterial, and a fibre passage disposed betweensaid feeding device and the first drum of said carding device forguiding the fibrous material in a'horizontal direction towards thecarding device, said passage being formed between spaced members forminga slot for the passage of said fibrous material without clampingpressure thereon.

2. In a card as set forth in claim 1, a feed table;- and said fibrepassage being'formed by the surface of said feed tableand a rotarycylinder spaced above said table in order to touch the fibrous materialfrom above without effective clamping pressure.

3. In a card as set'forth in claim 1, a feed table; and said fibrepassage being formed by two .rotary cylinders, the upper of saidcylinders being disposed above the other cylinder in order to touch thefibrous material from above without efiective clamping pressure.

4. In a card as set forth in claim 1, a feed table; and said fibrepassage being formed by the surface of said feed table and a bridgedisposed at the rear end of said feed table.

5. A card for long stapled fibrous material, especially cellulose wool,comprising a carding device for smoothing the fibres consisting of twocarding drums of substantially equal diameters; a feeding device forforwarding the fibres to said carding device; and a fibre passagearranged between said feeding device and the first of said drums forguiding the fibrous material in a horizontal direction towards thecarding device, said passage being formed between spaced members forminga slot for the passage of the fibrous material without clamping pressureth'ereon.

JAN FREDERIK JANNINK.

